Cold spraying auxiliary device for composite coating
By integrating ultrasonic atomization spraying and heating modules into a cold spraying auxiliary device, the problems of limited types and low bonding strength of nanomaterial-metal composite coatings are solved, achieving efficient and stable coating preparation and improving coating performance and production efficiency.
Patent Information
- Application Number
- CN202520859786.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2035-04-30
AI Technical Summary
In the existing preparation of cold-sprayed nanomaterial-metal composite coatings, the types of nanomaterials are limited and their distribution is uneven, resulting in low coating bonding strength. Furthermore, the process is complex and inefficient, making it difficult to achieve dynamic synergistic optimization.
The ultrasonic atomizing spraying component and heating module are integrated into the cold spraying system, which directly sprays the nanomaterial dispersion onto the surface or interior of the metal coating and performs heat treatment within the device, realizing the integration of the entire process of cold spraying, ultrasonic atomizing spraying and heat treatment.
Significantly expands the selection of nanomaterials, achieves high uniformity and high content of nanomaterial filling, improves coating performance, reduces dislocations and residual stress, enhances interfacial bonding strength, shortens process cycle, reduces costs, and improves production efficiency.
Smart Images
Figure CN223837566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cold spraying technology, specifically to a cold spraying auxiliary device for composite coatings. Background Technology
[0002] Cold spraying is a solid-state deposition technology that uses supersonic airflow to accelerate metal particles, causing them to collide with the substrate in a solid state and undergo plastic deformation, forming a dense coating or bulk material. The temperature during cold spraying does not exceed 150°C, making it suitable for heat-sensitive and oxidation-sensitive materials. The resulting coatings exhibit high deposition efficiency and low porosity. This technology is widely used in metal additive manufacturing, repair of failed components, and the preparation of composite materials. Currently, the main research focus of cold spraying technology is the preparation of nano-coatings. Cold spraying technology can prepare nanostructured coatings while maintaining their excellent wear resistance and corrosion resistance. Researchers have achieved new breakthroughs in the friction reduction, wear resistance, and corrosion resistance of cold-sprayed metal-based coatings by in-situ growth of layered hydrogen hydroxide (LDH) or adsorption of two-dimensional nanomaterials such as graphene oxide on the surface of cold-sprayed metal coatings. Researchers have also modified metal powders with nanomaterials before cold spraying to form cold-sprayed nanomaterial-metal composite coatings.
[0003] In the preparation of existing cold-sprayed nanomaterial-metal composite coatings, the nanomaterials need to be pretreated onto the surface of metal powder through chemical coating. This results in a limited selection of nanomaterials, low nanomaterial content and uneven distribution in the coating, making it difficult to fully utilize their functional properties. Furthermore, the severe deformation of metal particles during cold spraying can introduce dislocations and residual stress, leading to low coating bonding strength and poor plasticity. Subsequent heat treatment is required to improve performance, increasing process complexity and cost. In addition, nanomaterial spraying, cold spraying deposition and heat treatment are usually independent processes, which are cumbersome, inefficient and difficult to achieve dynamic synergistic optimization. Therefore, we propose a cold spraying auxiliary device for composite coatings. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a cold spraying auxiliary device for composite coatings. By integrating an ultrasonic atomizing spraying component, it directly sprays a nanomaterial dispersion onto the surface or interior of a metal coating. The device incorporates a heating module that works in conjunction with the cold spraying system to perform real-time heat treatment on the substrate. By integrating cold spraying, ultrasonic atomizing spraying, and the heat treatment module into the same device, it achieves a fully integrated process from metal powder deposition and nanomaterial composite to heat treatment, thus solving the problems mentioned earlier.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a cold spraying auxiliary device for composite coatings, comprising a device body, a feeding platform installed on the bottom side of the device body, a heating module installed inside the feeding platform, a powder spraying component installed in the middle of the top side of the device body, ultrasonic atomizing spraying components installed on the left and right sides of the top of the device body, a collection component installed on the bottom side of the device body, and an atmosphere component installed on both the left and right sides of the device body;
[0006] Preferably, the powder coating assembly includes a metal powder feeder located at the rear of the device body. The bottom of the metal powder feeder has a discharge port, the output end of which is fixedly connected to an acceleration tube. A fan is located at the rear of the metal powder feeder, the output end of which is fixedly connected to an air inlet pipe. The output end of the air inlet pipe is fixedly connected to the rear input end of the acceleration tube. A heating cylinder is fixedly installed at the top of the device body. A spiral coil is installed inside the heating cylinder, and a heating rod is installed inside the spiral coil, fixedly installed on the top inner side of the heating cylinder. A powder nozzle is installed at the bottom of the heating cylinder, the input end of which is fixedly connected to the output end of the spiral coil. A metal powder conveying pipe is fixedly connected to the top input end of the spiral coil, and the input end of the metal powder conveying pipe is fixedly connected to the output end of the acceleration tube.
[0007] Preferably, the ultrasonic atomizing spraying assembly includes an ultrasonic atomizing nozzle, the input end of which is fixedly connected to a connecting pipe, the connecting pipe being fixedly installed on the top of the device body, and the input end of the connecting pipe being fixedly connected to a nanomaterial liquid delivery pipe.
[0008] Preferably, the collecting component includes a collecting plate, a collecting groove is provided on the bottom side of the device body, the collecting plate is snapped onto the top of the collecting groove, a material leakage hole is provided through the collecting plate, handles are fixedly connected to the top left and right sides of the collecting plate, a circular groove is provided on the bottom left side of the collecting groove, a material outlet is provided through the rear side of the circular groove, and the output end of the material outlet is fixedly connected to a negative pressure discharge pipe.
[0009] Preferably, the atmosphere assembly includes an air inlet pipe, and several gas nozzles are installed on both the left and right sides of the device body, with the input ends of the several gas nozzles fixedly connected to the air inlet pipe.
[0010] Preferably, a sealing door is hinged to the front side of the device body, and a transparent observation window is provided on the sealing door.
[0011] Preferably, support blocks are installed at the four corners of the bottom side of the device body.
[0012] Preferably, a temperature display and adjustment buttons are installed on the bottom front side of the device body.
[0013] Preferably, a temperature sensor is also installed inside the feeding platform.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] 1. This utility model integrates an ultrasonic atomizing spraying component to directly spray a nanomaterial dispersion onto the surface or interior of a metal coating, avoiding the complex steps of traditional coating processes, significantly expanding the types of nanomaterials that can be selected, and achieving high uniformity and high content of nanomaterial filling, thereby enhancing the coating's wear resistance, corrosion resistance, and friction reduction properties.
[0016] 2. This utility model integrates a built-in heating module with a cold spraying system, which can perform real-time heat treatment on the substrate during the deposition process. This effectively reduces dislocations and residual stress caused by the deformation of metal particles, improves the interfacial bonding strength and plasticity between the coating and the substrate, and shortens the process cycle while reducing energy consumption and costs.
[0017] 3. This utility model integrates cold spraying, ultrasonic atomization spraying and heat treatment modules into the same device, realizing the integrated operation of the entire process from metal powder deposition, nanomaterial composite to heat treatment, reducing efficiency loss caused by intermediate process transfer, supporting the rapid preparation of high-performance composite coatings, and significantly improving production efficiency.
[0018] 4. This invention, through a bottom collection component and a negative pressure discharge system, can quickly recover unadhered nanomaterials or metal powders, reducing material waste and maintaining a clean working environment. Simultaneously, the atmosphere component, through dynamic coverage with inert gas, effectively isolates oxygen and impurities, preventing coating oxidation or contamination and ensuring the stability and repeatability of the preparation process. Attached Figure Description
[0019] Figure 1 This is a front view structural diagram of the main body of this utility model;
[0020] Figure 2 This is a schematic diagram of the rear view of the main body structure of this utility model;
[0021] Figure 3 This is a schematic diagram of the internal structure of the main body of this utility model;
[0022] Figure 4 This is a schematic diagram of the collection tank structure of this utility model.
[0023] Figure 5 This is a schematic diagram of the cross-sectional structure of the heating cylinder of this utility model.
[0024] In the diagram: 1. Device body; 2. Sealed door; 3. Temperature display; 4. Adjustment button; 5. Transparent observation window; 6. Heating cylinder; 7. Metal powder conveying pipe; 8. Nanomaterial liquid conveying pipe; 9. Gas nozzle; 10. Air inlet pipe; 11. Negative pressure discharge pipe; 12. Support block; 13. Powder nozzle; 14. Ultrasonic atomizing nozzle; 15. Connecting pipe; 16. Collection plate; 17. Discharge platform; 18. Leakage hole; 19. Handle; 20. Temperature sensor; 21. Collection trough; 22. Circular trough; 23. Discharge port; 24. Metal powder feeder; 25. Acceleration pipe; 26. Air inlet pipe; 27. Fan; 28. Discharge port; 29. Spiral coil; 30. Heating rod. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] Please see Figure 1-5 This embodiment provides a cold spraying auxiliary device for composite coatings, including a device body 1, a feeding platform 17 installed on the bottom inside the device body 1, a heating module installed inside the feeding platform 17, a powder spraying component installed in the middle of the top side of the device body 1, an ultrasonic atomizing spraying component installed on the left and right sides of the top of the device body 1, a collection component installed on the bottom inside the device body 1, and an atmosphere component installed on both the left and right sides of the device body 1.
[0027] In use, this cold spraying auxiliary device for composite coatings consists of a main body 1 that carries the substrate to be sprayed via a feeding platform 17. A heating module inside the feeding platform 17 heats the substrate or coating, controlling the temperature to optimize coating adhesion. A powder spraying assembly accelerates the heating of metal powder before spraying it onto the substrate surface, forming a metal-based coating. Simultaneously, ultrasonic atomizing spraying assemblies on the top left and right sides disperse liquid nanomaterials via ultrasonic dispersion, atomizing and spraying them onto the coating surface or interior, achieving uniform composite of nanomaterials and the metal coating. Atmosphere assemblies on the left and right sides of the main body 1 supply inert gas into the chamber, creating a protective atmosphere to prevent oxidation or contamination. During spraying, a collection assembly on the bottom inside collects any unadhered nanomaterials or metal powder, achieving material recovery and environmental cleanup. The entire process integrates cold spraying, nanomaterial composite, and heat treatment functions, collaboratively completing the preparation of a high-performance coating.
[0028] The powder coating assembly includes a metal powder feeder 24, which is located at the rear of the device body 1. A discharge port 28 is provided at the bottom of the metal powder feeder 24, and the output end of the discharge port 28 is fixedly connected to an acceleration tube 25. A fan 27 is located at the rear of the metal powder feeder 24, and the output end of the fan 27 is fixedly connected to an air inlet pipe 26. The output end of the air inlet pipe 26 is fixedly connected to the rear input end of the acceleration tube 25. A heating cylinder 6 is fixedly installed at the top of the device body 1. A spiral coil 29 is installed inside the heating cylinder 6, and a heating rod 30 is installed inside the spiral coil 29. The heating rod 30 is fixedly installed on the top side inside the heating cylinder 6. A powder nozzle 13 is installed at the bottom of the heating cylinder 6, and the input end of the powder nozzle 13 is fixedly connected to the output end of the spiral coil 29. A metal powder conveying pipe 7 is fixedly connected to the top input end of the spiral coil 29, and the input end of the metal powder conveying pipe 7 is fixedly connected to the output end of the acceleration tube 25.
[0029] When the powder coating assembly is working, the metal powder feeder 24 feeds metal powder into the acceleration tube 25 through the discharge port 28. At the same time, the blower 27 inputs high-pressure airflow into the acceleration tube 25 through the air inlet pipe 26, so that the powder particles are mixed with the airflow in the acceleration tube 25 and accelerated to supersonic speed. The accelerated powder-airflow mixture enters the heating cylinder 6 through the metal powder conveying pipe 7. The heating rod 30 in the spiral coil 29 heats the spiral coil 29 evenly. Then, the mixture is directionally sprayed onto the workpiece surface on the feeding table 17 through the powder nozzle 13 to form a nanomaterial and metal composite coating.
[0030] The ultrasonic atomizing spraying assembly includes an ultrasonic atomizing nozzle 14, the input end of which is fixedly connected to a connecting pipe 15. The connecting pipe 15 is fixedly installed on the top of the device body 1, and the input end of the connecting pipe 15 is fixedly connected to a nanomaterial liquid delivery pipe 8.
[0031] When the ultrasonic atomizing spraying assembly is in use, the ultrasonic atomizing nozzle 14 is installed on the top of the device body 1 through the connecting pipe 15. Its input end is supplied with nanomaterial dispersion liquid through the nanomaterial liquid delivery pipe 8. The nanomaterial liquid is atomized into fine particles by ultrasonic vibration and uniformly sprayed onto the surface or interior of the coating.
[0032] The collection assembly includes a collection plate 16. A collection trough 21 is provided on the bottom side of the device body 1. The collection plate 16 is snapped onto the top of the collection trough 21. A material leakage hole 18 is provided through the collection plate 16. Handles 19 are fixedly connected to the top left and right sides of the collection plate 16. A circular groove 22 is provided on the bottom left side of the collection trough 21. A discharge port 23 is provided through the rear side of the circular groove 22. The output end of the discharge port 23 is fixedly connected to a negative pressure discharge pipe 11.
[0033] When the collection component is in use, the collection plate 16 is installed on the top of the collection tank 21 on the bottom side inside the device body 1 by a snap-fit method. The material leakage hole 18 through the surface is used to screen out unadhered nanomaterials or metal powders. The operator can remove the collection plate 16 through the handle 19 on the top to clean the collected particles. The circular groove 22 on the bottom left side of the collection tank 21 is connected to the discharge port 23. The discharge port 23 discharges the collected material through the negative pressure discharge pipe 11 to achieve recycling and cleaning.
[0034] The atmosphere assembly includes an air inlet pipe 10, and several gas nozzles 9 are installed on both the left and right sides of the device body 1. The input ends of the several gas nozzles 9 are fixedly connected to the air inlet pipe 10.
[0035] When the atmosphere assembly is in use, the air inlet pipe 10 connects to several gas nozzles 9 installed on the left and right sides of the main body 1. Inert gas is delivered into the chamber through the gas nozzles 9 to form a protective atmosphere environment, thereby effectively isolating oxygen and impurities, avoiding coating oxidation or contamination during the spraying process, and ensuring the stability of the preparation process.
[0036] A sealing door 2 is hinged to the front of the device body 1. A transparent observation window 5 is provided on the sealing door 2. The sealing door 2 hinged to the front of the device body 1 is used to seal the chamber and ensure operational safety. The transparent observation window 5 on the sealing door 2 allows the operator to observe the spraying process in real time without having to frequently open the sealing door 2, thus reducing the interference of the external environment on the preparation process.
[0037] Support blocks 12 are installed at the four corners of the bottom side of the device body 1. The support blocks 12 installed at the four corners of the bottom side of the device body 1 provide stable support and ensure the structural rigidity of the device during operation.
[0038] A temperature display 3 and an adjustment button 4 are installed on the bottom front side of the device body 1. The temperature display 3 displays the temperature in real time, and the adjustment button 4 is used by the operator to manually adjust the heat treatment parameters to achieve precise temperature control.
[0039] The inside of the feeding platform 17 is also equipped with a temperature sensor 20 to monitor the internal temperature data of the feeding platform 17 in real time.
[0040] Working Principle: In use, this cold spraying auxiliary device for composite coatings has the device body 1 supporting the substrate to be sprayed via a feeding platform 17. The heating module inside the feeding platform 17 heats the substrate or coating, controlling the temperature to optimize coating adhesion. An ultrasonic atomizing nozzle 14 is installed on the top of the device body 1 via a connecting pipe 15. The nanomaterial dispersion, delivered by the nanomaterial liquid delivery pipe 8, is atomized into fine particles by ultrasonic vibration through the ultrasonic nozzle 14, and uniformly sprayed onto the surface or interior of the coating. Simultaneously, metal powder... The final feeder 24 feeds metal powder into the acceleration tube 25 through the discharge port 28, and the blower 27 inputs high-pressure airflow into the acceleration tube 25 through the air inlet pipe 26, so that the powder particles are mixed with the airflow in the acceleration tube 25 and accelerated to supersonic speed. The accelerated powder-airflow mixture enters the heating cylinder 6 through the metal powder conveying pipe 7 and is conveyed to the spiral coil 29. The heating rod 30 in the heating cylinder 6 heats the spiral coil 29 evenly. Then the mixture is directionally sprayed onto the workpiece surface on the discharge table 17 through the powder nozzle 13 to form a nanomaterial and metal composite coating.
[0041] The air inlet pipe 10 connects to several gas nozzles 9 installed on the left and right sides of the device body 1. Inert gas is delivered into the chamber through the gas nozzles 9 to form a protective atmosphere, thereby effectively isolating oxygen and impurities and preventing coating oxidation or contamination during the spraying process. During the spraying process, the collection plate 16 is installed on the top of the collection tank 21 on the bottom side of the device body 1 by a snap-fit method. The material leakage hole 18 through its surface is used to screen unadhered nanomaterials or metal powders. The operator can remove the collection plate 16 through the handle 19 on the top to clean the collected particles. The circular groove 22 on the left side of the bottom of the collection tank 21 is connected to the discharge port 23. The discharge port 23 discharges the collected material through the negative pressure discharge pipe 11. The temperature data monitored by the temperature sensor 20 inside the discharge platform 17 is displayed in real time through the temperature display 3 and the adjustment button 4. The operator can also manually adjust the heat treatment parameters to achieve precise temperature control, recycling and cleaning. The whole process integrates cold spraying, nanomaterial composite and heat treatment functions to complete the preparation of high-performance coatings.
[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A cold spraying auxiliary device for composite coatings, comprising a device body (1), characterized in that: A feeding platform (17) is installed on the bottom inside of the device body (1). A heating module is installed inside the feeding platform (17). A powder spraying assembly is installed in the middle of the top side of the device body (1). An ultrasonic atomizing spraying assembly is installed on the left and right sides of the top of the device body (1). A collection assembly is also installed on the bottom inside of the device body (1). An atmosphere assembly is installed on both the left and right sides of the device body (1).
2. The cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: The powder coating assembly includes a metal powder feeder (24), which is located on the rear side of the device body (1). A discharge port (28) is provided at the bottom of the metal powder feeder (24). The output end of the discharge port (28) is fixedly connected to an acceleration tube (25). A fan (27) is provided on the rear side of the metal powder feeder (24). The output end of the fan (27) is fixedly connected to an air inlet pipe (26). The output end of the air inlet pipe (26) is fixedly connected to the rear input end of the acceleration tube (25). A [missing information - likely a device name] is fixedly installed on the top of the device body (1). A heating cylinder (6) is provided with a spiral coil (29) inside the heating cylinder (6). A heating rod (30) is provided inside the spiral coil (29), and the heating rod (30) is fixedly installed on the top side inside the heating cylinder (6). A powder nozzle (13) is installed at the bottom of the heating cylinder (6). The input end of the powder nozzle (13) is fixedly connected to the output end of the spiral coil (29). The top input end of the spiral coil (29) is fixedly connected to a metal powder conveying pipe (7). The input end of the metal powder conveying pipe (7) is fixedly connected to the output end of the acceleration pipe (25).
3. The cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: The ultrasonic atomizing spraying assembly includes an ultrasonic atomizing nozzle (14), the input end of which is fixedly connected to a connecting pipe (15), the connecting pipe (15) is fixedly installed on the top of the device body (1), and the input end of the connecting pipe (15) is fixedly connected to a nanomaterial liquid delivery pipe (8).
4. The cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: The collection assembly includes a collection plate (16). A collection groove (21) is provided on the bottom side of the device body (1). The collection plate (16) is snapped onto the top of the collection groove (21). A material leakage hole (18) is provided through the collection plate (16). A handle (19) is fixedly connected to the left and right sides of the top of the collection plate (16). A circular groove (22) is provided on the left side of the bottom of the collection groove (21). A discharge port (23) is provided through the rear side of the circular groove (22). The output end of the discharge port (23) is fixedly connected to a negative pressure discharge pipe (11).
5. A cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: The atmosphere assembly includes an air inlet pipe (10), and several gas nozzles (9) are installed on the left and right sides of the device body (1). The input ends of the several gas nozzles (9) are fixedly connected to the air inlet pipe (10).
6. The cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: The device body (1) is hinged to a sealing door (2) on the front side, and a transparent observation window (5) is provided on the sealing door (2).
7. A cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: Support blocks (12) are installed at the four corners of the bottom side of the device body (1).
8. A cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: A temperature display (3) and an adjustment button (4) are installed on the bottom front side of the device body (1).
9. A cold spraying auxiliary device for composite coatings according to claim 1, characterized in that: A temperature sensor (20) is also installed inside the feeding platform (17).